Night Work Tobacco Smoke Chemicals in the Environment

pure breast health - Night Work Tobacco Smoke Chemicals in the Environment cause breast cancer. A great deal of research has been reported and more is being done to understand possible environmental influences on breast cancer risk. Most studies have found no link between cigarette smoking and breast cancer. Several studies have suggested that women who work at night. detail at pure breast health - Night Work Tobacco Smoke Chemicals in the Environment cause breast cancer. (more : Breast implants Bras Induced abortion Bras Antiperspirants - Diet And Vitamin Intake on Breast Cancer)

Chemicals in the environment
A great deal of research has been reported and more is being done to understand possible environmental influences on breast cancer risk.

Of special interest are compounds in the environment that studies have found to have estrogen-like properties in lab animals. These could in theory affect breast cancer risk. For example, substances found in some plastics, certain cosmetics and personal care products, pesticides (such as DDE), and PCBs (polychlorinated biphenyls) seem to have such properties.

This issue understandably invokes a great deal of public concern, but at this time research does not show a clear link between breast cancer risk and exposure to these substances. Unfortunately, studying such effects in humans is difficult. More research is needed to better define the possible health effects of these and similar substances.

Tobacco smoke
Most studies have found no link between cigarette smoking and breast cancer. Some studies have suggested smoking increases the risk of breast cancer, but this remains controversial.

An active focus of research is whether secondhand smoke increases the risk of breast cancer. Both mainstream and secondhand smoke contain chemicals that, in high concentrations, cause breast cancer in rodents. Chemicals in tobacco smoke reach breast tissue and are found in breast milk.

The evidence on secondhand smoke and breast cancer risk in human studies is controversial, at least in part because smokers have not been shown to be at increased risk. One possible explanation for this is that tobacco smoke may have different effects on breast cancer risk in smokers and in those who are just exposed to smoke.

A report from the California Environmental Protection Agency in 2005 concluded that the evidence about secondhand smoke and breast cancer is "consistent with a causal association" in younger, mainly premenopausal women. The 2006 US Surgeon General's report, The Health Consequences of Involuntary Exposure to Tobacco Smoke, concluded that there is "suggestive but not sufficient" evidence of a link at this point. In any case, this possible link to breast cancer is yet another reason to avoid secondhand smoke.

Night work
Several studies have suggested that women who work at night — for example, nurses on a night shift — may have an increased risk of developing breast cancer. This is a fairly recent finding, and more studies are looking at this issue. Some researchers think the effect may be due to changes in levels of melatonin, a hormone whose production is affected by the body's exposure to light, but other hormones are also being studied.